Loose-leaf binder.



J. G. DAWSON. LOOSE LEAF BINDER. APPLIQATION FILED 11017.11, 1912.

Patented Nov. 4, 1913.

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UNITED STATES PATENT OFFICE.

. JAMES c. nnwsomor WEBSTER enovns, MrssoURI, AssIGnoR T GEORGE-D. BARNARD &.c o., or sr. Loursmrssounr, A CORPORATION or ILLINOIS.

LOOSE-LEAF BINDER.

Specification of Letters Patent.

Patented Nov. 4, 1913.

Application filed November 11, 1912. Serial No. 730,698.

. and. more particularly to those having a pair of uprightfiling posts with one of the posts *movable and provided with an overhanging top for telescopically'engaging the higher end of the other post. p

The object of the inventionis to provide a binder of this type which shall be of simpleand improved construction and reliable in operation.

The invention is exemplified in the structureto be hereinafter described, and which is illustrated in the accompanying drawings, wherein- Figure 1is a perspective view showings loose leaf binder embodying features of improvement provided by the invention;

} F ig. 2 is similar to Fig. 1 but has some of the parts broken away to showthe internal construction; and Fig. 3. is a detail longitudinal sectional view of the binder.-

For the purpose of illlistrating' the invention there is shown a; binder adapted to re- -ceive adjustable leaves of the sort shown in' the patent to Anderson No. 87 9,135, dated,

February 18, 1908, and having" dumb-bell shaped filing apertures. The parts of the binder are shown as being associated upon a base plate '10. This base plate, together with atop plate shown at 11, serve as'covers for the sheets 12. As already indicated, the sheets 12 are punched with dumb bell shaped apertures shown at 13 and 14 (Fig. 1). In practice the sheets 12 arefiled upon upright 13, the posts of each pair being normally connected at their higher ends by arches, represented at 19 and 20. To permit the sheets to be shifted in position in the hinder, the arches 19, 20 are of flattened cross section to receive the contracted portion of the dumbbell shaped apertures 13, 14f

In carrying out the present invention the arches 19 and 20 are each formed integral with one of the posts, as 16, 18, and these block 27 fixed in position within the champosts arranged. in pairs, as 15, 16 and l7 opened by lifting the arches 19,20 to-raiseposts are movably mounted to bring the free ends of the arches into and out of engagement with the posts 15 and 17 respectively.

By means of this arrangement. complete rigid filing arches are formed, and there is but one joint between the parts of thearches over which the sheets must be passed in transferring them from side to side on the binder.

A base member 21 preferably constructed in the form of an inverted channel and having closed ends, serves for supporting the fil ng posts. The upper surface of this base member is preferably flush with'the upper sur-" face of the base plate 10 to provide a smooth support for the sheets to be filed. I For this purpose the base plate 10 is rabbeted adjacent 'one end to provide a seat 22 for re-I' ceiving the flattened tubular base member 21. Screws shown at 23 serve for securing the base member '21 upon said'seat.

Preferably the posts 15 and 17 arejtationarily mounted, as by being rigidly secured at their lower endsupon the wall of the base member 21. The posts 16 and 18 are mounted to swing upwardly and out wardly.. As shown', these posts rise from a plate 24 inclosed within the chamberof the base member -21,'and pass through slotted openings 25 in the upper wall of said-base :member. The plate 211 is movably mounted by being provided with a trunnion 26 at each end. These .trunnions are each engaged with a vertically slotted bearing ber of the base member 21. To provide a firm connection between the two posts, as 15, 16 and 17, 18 of each pair when the binder is closed, the freeendof each of the arches 19, 20 is of reduced diameter to form a stud 28, and the posts 15;

17 are each provided with a socket 29 at their higher ends for receiving the corresponding studs. The binder mechanismis; 106 the studs 28 out of engagement with the. sockets-29 and by then swinging the posts 16, 18v away from the posts" 15, 17 to the position indicated by dotted lines in Fig. 3. This movement of the posts is accompanied by a rising and-turning movement offthe plate 24, which movement is accommOdated by the slotted form of the bearings 27.

Most desirably a key-operated mechanism is provided for holding the parts of the closed position. To this end, a gn qenangplate" 30 is slidingly mounted withthe chamber of the tubular base member T. 21.1 The sliding movement of. the locking fl s iplate is guided and limited by meansof' guide p ns 31 each of which is fixed in p sitlon'within the chamber of the base mem- :ber 21 and passesthrough a slotted opening .32 in the locking plate 30. The plate 24 is logprovided with lateral extensions 33 and 34, and the pl ate' is locked against movement for holding the filing arch members in ,tclosed' position, by moving the locking plate 0 over the lateral extensions 33, 34 of the plate the adjacent end wall of the tubular base member 21 in line with the plunger.

When the binder is to be used, the desired number of sheets 12 are threaded onto the p'osts 15, 17 and the arches 19, 20 are then $0 'closed upon these posts. \Vhen a new entry has been made on any one of the sheets 12, such sheet will be shifted in position by raising it "into engagement with the arches 19,20, and then moving the sheet in a direc- 235 tionQto pass these arches through the contracted portion of the dumb-bell shaped apertures 13, 14. Sheets which have been shifted in this way will .be diiferentiated fromfother'sheets in the binder by the pro- ZO .jec'tion of one edge of the sheet beyond the corresponding side of the remaining sheets,

in. the manner indicated at 39 (Fig. 2). When it is desired to remove .anysheet from the binder, a key (not shown) will be applied to the end of the plunger 35 through the keyhole 38 and the plunger rotated to 'withdraw the locking plate from engagement withthe laterally extended portions 33, 3410f the tilting plate 2-1. 4 The construction provides a binder having filing arches which are of flattened cross section at the crown whereby the sheets may be' lshifted in position without opening any of the arches. Furthermore, the arches are held in closedposition by a mechanism which is of-simple construction and reliable iii'operation and which permits of the arches formed with but a single joint over whic :-the leaves must be passed in moving themfrom one'side tothe other of the binderi'flfThis last-mentioned feature of the construction is of importance in producing a binder which is reliable in operation, as it is well known-that joints in the filing posts or arches of a binder frequently interfere with the movement of the sheets therein.

.1 claim as my invention Y 1. In a loose leaf binder, in combination, a base, a pair-of'normally upright filing posts, one having an overhanging top and the other post being fixed in the. base, the ends of the two posts being constructed for telescopic connection, a pair of trunnions projecting laterally in opposite directions from the lower end of the post having the overhanging top, vertically slotted bearing blocks mounted on the base for receiving the trunnions, an upwardly facing shoulder rigid with the post having the trunnions, and a locking plate movable over the said shoulder when the trunnions occupy the lower ends of the said slots.

2. In a loose leaf binder, in combination, a flattened tubular base having a slotted opening in its wall, a pair of filing posts rising from the base, one thereof being fixed at its lower end in a wall of the base and the other having an integral overhanging top and extending at its lower end through the said slotted opening into thechamberof the base, the higher ends of the two posts being constructed for telescopic connection, a. plate within the chamber of the base fixed upon the lower end of the post having the overhanging top, trunnions on the end of the plate, a vertically slotted bearing block fixed within the chamber of the base for receiving each of the trunnions, and a looking plate sliding within the chamber of the base and movable over the first named plate when the trunnions occupy the lower ends of the slots of the said bearing blocks.

3. In a loose leaf binder, in combination, a base, a pair of normally upright filing posts, one having an overhanging top and being connected to the base by a vertically slidingpivot and the other post beingfixed in the base, the ends of the two posts being constructed for telescopic connection, an up.- wardly facing shoulder rigid with the post 110 having the overhanging top, said shoulder being offset from the line of pivotal connection of the post with the base toward the fixed post and a locking plate movable over thesaid shoulder when the ends of the two 115 posts are in telescopic engagement.

JAMES C. DAIVSON.

lVitnesses:

M. A. WIccINs, .C. RHODES.

Gopies'of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. (1. 

